SoFi's approach is unique. It reviewed the self-reported income on over 60,000 student-loan refinancing forms from January 2014 to December 2017.

The average salary for graduates of all business schools SoFi reviewed was $109,992. The University of Pennsylvania took the top spot, beating out Harvard, Columbia, and Stanford business schools. Wharton graduates earn an average salary of $224,034, according to SoFi's data.

Below are the top 20 business schools where graduates earn the most money, ranked from lowest to highest salary.